[INFO] cloning repository https://github.com/patrickodacre/substrate-seminar-8-traits
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/patrickodacre/substrate-seminar-8-traits" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpatrickodacre%2Fsubstrate-seminar-8-traits", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpatrickodacre%2Fsubstrate-seminar-8-traits'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3551cc92f2d1f0689c8fae6b19f6f671df99ce94
[INFO] checking patrickodacre/substrate-seminar-8-traits against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpatrickodacre%2Fsubstrate-seminar-8-traits" "/workspace/builds/worker-65/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-65/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/patrickodacre/substrate-seminar-8-traits on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/patrickodacre/substrate-seminar-8-traits
[INFO] finished tweaking git repo https://github.com/patrickodacre/substrate-seminar-8-traits
[INFO] tweaked toml for git repo https://github.com/patrickodacre/substrate-seminar-8-traits written to /workspace/builds/worker-65/source/Cargo.toml
[INFO] crate git repo https://github.com/patrickodacre/substrate-seminar-8-traits already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9aea95df897a56e9437de766d8d4c23c9bb15961c8729158d8d97f92e0b02e0d
[INFO] running `Command { std: "docker" "start" "-a" "9aea95df897a56e9437de766d8d4c23c9bb15961c8729158d8d97f92e0b02e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9aea95df897a56e9437de766d8d4c23c9bb15961c8729158d8d97f92e0b02e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9aea95df897a56e9437de766d8d4c23c9bb15961c8729158d8d97f92e0b02e0d", kill_on_drop: false }`
[INFO] [stdout] 9aea95df897a56e9437de766d8d4c23c9bb15961c8729158d8d97f92e0b02e0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-65/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90c1ffd0f88068fbe70f00c12b621964944f98b777046ec79a1973d539c5fe57
[INFO] running `Command { std: "docker" "start" "-a" "90c1ffd0f88068fbe70f00c12b621964944f98b777046ec79a1973d539c5fe57", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking trait-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `BalancesModule`
[INFO] [stdout]   --> src/balances.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct BalancesModule<C: Config>
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/balances.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn new() -> Self
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `balance`
[INFO] [stdout]   --> src/balances.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn balance(&self, who: C::AccountId) -> C::Balance
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `set_balance`
[INFO] [stdout]   --> src/balances.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 |     pub fn set_balance(&mut self, who: C::AccountId, amount: C::Balance)
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `transfer`
[INFO] [stdout]   --> src/balances.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn transfer(
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.34s
[INFO] running `Command { std: "docker" "inspect" "90c1ffd0f88068fbe70f00c12b621964944f98b777046ec79a1973d539c5fe57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90c1ffd0f88068fbe70f00c12b621964944f98b777046ec79a1973d539c5fe57", kill_on_drop: false }`
[INFO] [stdout] 90c1ffd0f88068fbe70f00c12b621964944f98b777046ec79a1973d539c5fe57